JP2014032385A - Display system, image display terminal device, and information processing apparatus - Google Patents

Abstract

To provide a display system, an image display terminal device, and an information processing device capable of speeding up display and reducing power consumption in an image display terminal device provided with electronic paper.
An information processing apparatus includes a first storage unit and a first file management unit. The image display terminal 3 includes a display unit, a second storage unit, and a second file management unit, and displays information on a file transferred from the information processing apparatus. A pdf file including the first display data is stored in the first storage unit, and an mcdp file including the second display data in the bitmap format that matches the attributes of the display unit from the first display data is generated. Is performed in the first file management unit. The mcdp file is transferred to the image display terminal together with the pdf file and stored in the second storage unit, and control for displaying the file information on the display unit is performed by the second file management unit. The file information used for display is second display data.
[Selection] Figure 1

Description

  The present invention relates to a display system, an image display terminal device, and an information processing device.

  In recent years, there has been an increasing demand for electronic paper with advantages such as excellent visibility and low power consumption, and it is used for electronic book readers (electronic book readers), electronic signage (digital signage), and some mobile phones. ing.

  In particular, the spread of electronic books is remarkable, and the lifestyle of downloading and reading electronic books on portable image display terminal devices is being established. Electronic paper is superior in terms of visibility and power consumption compared to other display media such as LCD (Liquid Crystal Display), and is suitable for reading on portable image display terminal devices. There is a drawback that the display speed is slower than that of an LCD or the like.

  For example, in Japanese Patent Application Laid-Open No. 2004-228561, by dividing only the screen area and displaying only the highly important partial areas, it is possible to perform page feed at high speed while displaying only meaningful parts. There has been proposed an electronic book device capable of performing the above.

JP 2012-42528 A

  However, the method of Patent Document 1 is not necessarily satisfactory for the user because it partially discards the contents of the screen.

  On the other hand, recently, by improving the architecture of the display controller of electronic paper, high-speed display is becoming possible, and data file parsing (structural analysis) and rendering (image generation) processing on image display terminal devices By speeding up the display, there is a possibility that a display speed acceptable to the user can be achieved.

  However, since the parsing and rendering processes have a large processing load, it is necessary to incorporate a high-function CPU with high processing capability in the image display terminal device, which is expensive. Further, since rendering is performed every time the page is turned, there is a problem that battery consumption increases.

  The present invention has been made in view of the above problems, and according to some aspects of the present invention, the display speed of an image display terminal device including electronic paper is increased and the power consumption is reduced. It is possible to provide a display system, an image display terminal device, and an information processing device that can perform the above operation.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following aspects or application examples.

[Application Example 1]
The display system according to this application example includes an information processing device including a first storage unit and a first file management unit, a display unit, a second storage unit, and a second file management unit, and the information processing device A first file including first display data is stored in the first storage unit, and the first display data is displayed on the first display data. The second file including the second display data in the bitmap format in accordance with the attribute of the display unit is generated in the first file management unit, and the second file is stored in the first file. The file is transferred to the image display terminal device together with the file and stored in the second storage unit, and the display of the file information on the display unit is controlled by the second file management unit and used for display. Said f Information yl is characterized in that the a second display data.

  According to the display system according to this application example, the image display terminal device only needs to display bitmap format data included in the second file, and therefore needs to perform parsing and rendering processing of the first file. Absent. Therefore, it is possible to speed up the display in the image display terminal device including the electronic paper and reduce the power consumption of the image display terminal device.

[Application Example 2]
In the display system according to the application example, the name of the first file may be used for displaying the name of the file in the image display terminal device.

  According to the display system according to this application example, the second file is concealed to the user on the image display terminal device, and the image display terminal device can appear as if it is processing the first file at high speed. it can.

[Application Example 3]
In the display system according to the application example, the display unit has a function of obtaining first additional information written in the display unit, and is written when the second display data is displayed. The first additional information is stored in the second storage unit as vector format data, and when the first file is transferred to the information processing device, the vector format data is also transferred, The first file management unit may combine the vector format data with the first file.

  According to the display system according to this application example, the image display terminal device does not need to synthesize the first file and the vector format data corresponding to the first additional information. Therefore, the processing load and power consumption of the image display terminal device can be reduced.

[Application Example 4]
In the display system according to the application example described above, the vector format data may be annotated to the first display data as an independent object.

  In the display system according to this application example, the information processing apparatus combines the first display data included in the first file and the vector format data added by the image display terminal apparatus into one image data. Rather than annotating the first display data as vector display data as an object separate from the first display data, the information processing apparatus creates a new file with the vector format data annotated. As the first file, the first display data is transferred to the image display terminal device together with the second file converted into the bitmap format data, so that the image display terminal device deletes or changes the vector format data. Is possible.

[Application Example 5]
In the display system according to the application example, the vector format data may further include second additional information added by an operation in the display unit.
The “operation on the display unit” is, for example, an operation using a menu, and the “second additional information” is, for example, an underline (underline) or a bookmark.

  According to the display system according to this application example, the image display terminal device does not need to synthesize the first file and the vector format data corresponding to the second additional information. Therefore, the processing load and power consumption of the image display terminal device can be reduced.

[Application Example 6]
In the display system according to the application example, the vector format data may be associated with the second display data and stored in the second storage unit as a part of the second file.

  According to the display system according to this application example, the image display terminal device is included in the first file by storing the data in the vector format as a part of the second file in association with the second display data. The process of combining the first display data and the added vector format data is not necessary. Therefore, even when a vector image is added in the image display terminal device, the low processing load and low power consumption of the image display terminal device can be maintained.

[Application Example 7]
In the display system according to the application example described above, the second file may include additional information, and the additional information may be used to identify whether the vector format data exists.

  According to the display system according to this application example, the image display terminal device and the information processing device can easily identify whether or not vector format data exists in the second file based on the supplementary information.

[Application Example 8]
In the display system according to the application example, the second display data may include bitmap-format data having a plurality of resolutions.

  According to the display system according to this application example, since the second display data includes bitmap-format data having a plurality of resolutions, the image display terminal device displays an enlarged image or a reduced image at least at a predetermined magnification. In this case, it is not necessary to perform rendering by using any one of the plurality of resolution bitmap data, and the display can be speeded up while suppressing power consumption.

[Application Example 9]
In the display system according to the application example, the image display terminal device may have predetermined model information, and the second display data may be generated based on the predetermined model information.

  According to the display system according to this application example, the information processing apparatus generates second display data with an appropriate resolution according to the model of the image display terminal device by using the model information of the image display terminal device. can do. Therefore, a highly versatile display system can be realized.

[Application Example 10]
An image display terminal device according to this application example includes a display unit including electronic paper, an image display processing unit that performs processing for displaying an image on the display unit, and a memory that stores the first file and the second file. And a file management unit, wherein the first file includes first display data, the second file includes second display data, and the second display data includes When the first display data is bitmap format data converted according to the attribute of the display unit, and the operation for displaying the contents of the first file is performed, the second display data The second file is displayed on the display unit using display data.

  According to the image display terminal device according to this application example, the processing for parsing and rendering the first file by using the second display data that is bitmap format data converted in accordance with the attributes of the display unit. Therefore, the display speed of the electronic paper can be increased and the power consumption of the image display terminal device can be reduced.

[Application Example 11]
An information processing apparatus according to this application example includes: a storage unit that stores a first file that includes first display data; and a file management unit that generates a second file that includes second display data. And the second display data is bitmap format data generated from the first display data, and an operation for transferring the first file to an external device is performed. The second display data is generated when it is performed, and the transfer of the file to the external device is performed for the first file and the second file. .

  According to the information processing apparatus according to this application example, when the operation for transferring the first file to the external apparatus is performed, the second display data in the bitmap format is generated, Since the first file and the second file including the second display data are transferred, an external device can realize high-speed display using the second display data.

[Application Example 12]
Another display system according to an application example of the present invention includes an information processing device having a first file management unit and an image display terminal device having a second file management unit, and the first file The management unit displays a display image using the first display data included in the first file information, and the second file management unit displays the second display data included in the second file information. The display image is displayed using data, and the second file information includes the first display data and the second display data, and the second file information includes the first file information. When the file information is transferred from the information processing apparatus to the image display terminal apparatus, the file information is generated in the first file management unit.

[Application Example 13]
In the other display system described above, it is preferable that the second display data is data in a format in accordance with an attribute of a display unit of the image display terminal device.

[Application Example 14]
In the other display system, the image display terminal device has a function of acquiring the first additional information written in the display unit and adding the first additional information to the second file information. The file management unit preferably displays the display image using the second display data and the first additional information.

[Application Example 15]
In the other one display system, the second file management unit transfers the second file information from the image display terminal device to the information processing device, and the first display data and the Third file information including first additional information is generated, and the first file management unit manages the third file information as the new first file information, and the first display It is preferable to display the display image using the business data and the first additional information.

[Application Example 16]
In the other display system, it is preferable that each of the information processing apparatus and the image display terminal apparatus can be used as an independent apparatus.

[Application Example 17]
In the other display system described above, it is preferable that the second display data is bitmap format data, and the first additional information is vector format data.

[Application Example 18]
In the other one display system, it is preferable that the display control unit for controlling the display unit and the second file management unit are configured as one semiconductor circuit device.

[Application Example 19]
Another image display terminal device according to an application example of the present invention includes a storage unit, a writable display unit, and a file management unit, and the storage unit stores file information created by another device. And the file information includes first display data and second display data, and the file management unit obtains first additional information written by the user in the display unit and stores the file In addition to adding to the information, when displaying the image on the display unit using the second display data and the first additional information and outputting the content of the file information to the other device, the file The management unit outputs the first display data and the first additional information.

Explanatory drawing about the structure of the display system of 1st Embodiment, and the outline | summary of a process. Explanatory drawing about the structure of the display system of 1st Embodiment, and the outline | summary of a process. Explanatory drawing about the structure of the display system of 1st Embodiment, and the outline | summary of a process. Explanatory drawing about the structure of the display system of 1st Embodiment, and the outline | summary of a process. 1 is a diagram illustrating a hardware configuration example of an information processing apparatus according to a first embodiment. The figure which shows an example of the file for high-speed display. 1 is an external view of an image display terminal according to a first embodiment. The figure which shows the hardware structural example of the image display terminal of 1st Embodiment. 1 is a block diagram of an electrophoretic display device according to a first embodiment. FIG. 3 is a diagram illustrating a configuration example of a pixel of the electrophoretic display device in the first embodiment. (A) is a figure which shows the structural example of a microcapsule, (B) and (C) are explanatory drawings of operation | movement of a microcapsule. The figure which shows a part of flowchart of the process with respect to the file operation by information processing apparatus. The figure which shows a part of flowchart of the file conversion & transfer process by information processing apparatus. The figure which shows a part of flowchart of the file transfer & synthetic | combination process by information processing apparatus. 6 is a diagram showing a part of a flowchart of file rename / delete / move / copy processing by the information processing apparatus. FIG. The figure which shows a part of flowchart of the process by an image display terminal. The figure which shows a part of flowchart of a rename / deletion / movement / copy process by an image display terminal. The figure which shows a part of flowchart of the file browsing & edit process by an image display terminal. The figure which shows a part of flowchart of the vector image editing process by an image display terminal. The figure which shows an example of the file for high-speed display in 2nd Embodiment. The figure which shows an example of the model information of an image display terminal. The figure which shows an example of an image display terminal. The figure which shows the hardware structural example of the image display terminal of 4th Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below do not unduly limit the contents of the present invention described in the claims. Also, not all of the configurations described below are essential constituent requirements of the present invention.

1. 1. First embodiment 1-1. Outline of Configuration and Processing of Display System FIGS. 1 to 4 are explanatory diagrams about the outline of the configuration and processing of the display system of this embodiment. The display system 1 of the present embodiment includes an information processing device 2 and an image display terminal (image display terminal device) 3. 1 to 4, the information processing apparatus 2 is a personal computer (PC) or the like, and the image display terminal 3 is an electronic book terminal or the like. The information processing device 2 and the image display terminal 3 can be connected to each other by, for example, a USB cable 4 to perform data communication. However, the information processing apparatus 2 and the image display terminal 3 may perform wireless data communication.

  In FIG. 1, the / root / data folder of the image display terminal 3 is displayed on the display of the information processing apparatus 2, and the user uses the mouse (not shown) of the information processing apparatus 2 to display the information processing apparatus 2. Xxx. An operation of dragging and dropping a pdf file icon and copying it to the / root / data folder of the image display terminal 3 is shown. When this copy operation is performed, the information processing apparatus 2 determines that xxx. xxx. for high-speed display of the same name from the pdf file. An mcdp file is created, and xxx. pdf file and xxx. Copy the mcdp file. At this time, xxx. pdf file and xxx. The mcdp file is not copied to the copy destination / root / data folder, but a pdf folder and an mcdp folder are created immediately below the mcdp file. At this time, the information processing apparatus 2 displays the pdf file copied to the / root / data / pdf folder as the contents of the / root / data folder of the image display terminal 3, and is copied to the / root / data / mcdp folder. The mcdp file is not displayed. Thereafter, the user removes the USB cable 4 and uses the image display terminal 3 alone.

  FIG. 2 shows a screen displayed on the display of the image display terminal 3 when the user refers to the / root / data folder using the input button of the image display terminal 3. As shown in FIG. 2, the image display terminal 3 displays the name of the reference folder as “/ root / data” but not the contents of the / root / data folder but the contents of the / root / data / pdf folder. Display. As a result, xxx. Which actually does not exist in the / root / data folder. The icon is displayed as a pdf file virtually existing in the / root / data folder. The user can use this xxx. Various file operations (renaming, deleting, moving, copying, etc.) can be performed on the icon of the pdf file. The image display terminal 3 renames, deletes, moves, and copies the pdf file and the mcdp file according to the file operation, but only the pdf file is displayed on the display, and the mcdp file is not displayed. That is, the user cannot recognize the existence of the mcdp file.

  In FIG. 3, the user uses the input button of the image display terminal 3 to virtually exist in the root / data folder (actually exists in the / root / data / pdf folder). A screen displayed on the display of the image display terminal 3 when a browsing operation of the pdf file (operation for displaying the contents of the file) is performed is shown. At this time, the image display terminal 3 receives the xxx. Instead of reading out a pdf file, instead of xxx. for high-speed display existing in the / root / data / mcdp folder. Read the mcdp file and display it on the display. xxx. The mcdp file contains xxx. Bitmap format image data corresponding to the display attributes of the image display terminal 3 corresponding to each page of the pdf file (total number of pixels, display color (gradation), etc.) is included, and the image display terminal Since 3 does not need to perform rendering processing, high-speed display becomes possible. In addition, the user can write a handwritten figure on the image displayed on the display using a touch pen. Not pdf file but xxx. The edited data is added to the mcdp file. That is, the user recognizes that a browsing operation or an editing operation is being performed on the pdf file, but in actuality, a process is performed on the mcdp file.

  In FIG. 4, the user uses the mouse (not shown) of the information processing apparatus 2 to display xxx. An operation of dragging and dropping the icon of the pdf file and copying it to the desktop of the information processing apparatus 2 is shown. When this copy operation is performed, the information processing apparatus 2 causes the image display terminal 3 to store the xxx. Data in the / root / data / pdf folder. Copy the pdf file to the information processing apparatus 2. In addition, the information processing apparatus 2 receives xxx.existing in the / root / data / mcdp folder of the image display terminal 3. Edit data such as a handwritten figure is extracted from the mcdp file and copied to the information processing apparatus 2. The information processing apparatus 2 then copies the copied xxx. The pdf file and the editing data are combined, and a new xxx. Create a pdf file.

1-2. Configuration of Information Processing Device FIG. 5 is a diagram illustrating a hardware configuration example of the information processing device 2 of the present embodiment. As illustrated in FIG. 5, the information processing apparatus 2 according to the present embodiment includes a processing unit 10, an operation unit 20, a storage unit 30, a display unit 50, a sound output unit 60, and a communication unit 70, and these These components can exchange various data via the bus 80. The information processing apparatus 2 according to the present embodiment may have a configuration in which some of the components (each unit) in FIG. 5 are omitted or changed, or other components are added.

  The operation unit 20 is an input device such as a keyboard 22 or a mouse 24 and outputs an operation signal corresponding to an operation by a user to the processing unit 10.

  The storage unit 30 (an example of a first storage unit) stores programs, data, and the like for the processing unit 10 to perform various types of calculation processing and control processing. In particular, in the present embodiment, the storage unit 30 stores (installs) a file management program 32 for performing processing such as folder display and file operation. The storage unit 30 stores a data file 34 including display data (for example, the pdf file described with reference to FIGS. 1 to 4). As the data file 34 including the display data, in addition to the pdf file, various types of files adopted as standards for electronic books and the like can be considered, and examples thereof include an epub (Electronic Publication) file.

  The storage unit 30 is also used as a work area of the processing unit 10. In this embodiment, the storage unit 30 stores a high-speed display file 36 generated from the data file 34 (for example, as described with reference to FIGS. 1 to 4). Mcdp file) is stored.

  The display unit 50 is a display device (display) configured by an LCD or the like, and displays various types of information based on a display signal output from the processing unit 10.

  The sound output unit 60 is a device that outputs sound, such as a speaker, and outputs various sounds (including sound) based on signals output from the processing unit 10.

  The communication unit 70 is for performing data communication with other devices by wire or wireless under the control of the processing unit 10. The communication unit 70 may be a USB interface to which a USB cable or the like is connected, for example. In this case, communication with the image display terminal 3 having the USB interface via the communication unit 70 is possible.

  The processing unit 10 performs various calculation processes and control processes according to various programs stored in the storage unit 30. In particular, in the present embodiment, the processing unit 10 includes an input operation detection processing unit 12 and a file management unit 14. However, the processing unit 10 of the present embodiment may have a configuration in which some of these configurations (elements) are omitted or changed, or other configurations (elements) are added.

  The input operation detection processing unit 12 performs a process of detecting an input operation by the user based on an operation signal from the operation unit 20 (keyboard 22 or mouse 24).

  The file management unit 14 (an example of a first file management unit) performs an input operation (file) on a file selected from the files displayed on the display unit 50 based on the detection result of the input operation detection processing unit 12. Process according to the operation).

  In particular, in this embodiment, the file management unit 14 displays the display data (included in the data file 34) when the file operation for transferring the data file 34 (an example of the first file) to the image display terminal 3 is performed. The first display data) is converted to bitmap format (raster format) data (second display data) that matches the attributes of the display unit of the image display terminal 3 and includes the bitmap format data. A display file 36 (an example of a second file) is generated, and the data file 34 and the high-speed display file 36 are associated with each other and stored in the storage unit of the image display terminal 3. In addition, the file management unit 14 performs a process of displaying the data file 34 on the display unit 50 without displaying the high-speed display file 36 as a file operation target.

  The file management program 32 and the data file 34 may be stored in the storage unit 30 from the beginning, but the processing unit 10 stores the file management program 32 and the data file stored in the computer-readable information storage medium. 34 may be read out and stored in the storage unit 30. The computer-readable information storage medium is, for example, an optical disc (compact disc (CD), digital versatile disc (DVD), Blu-ray disc (BD), laser disc (registered trademark) (LD), etc.), magneto-optical disc (MO). ), Magnetic disk (hard disk drive (HDD), flexible disk (FD), etc.), magnetic tape (digital data storage (DDS), etc.), memory (flash memory, memory card, USB memory, etc.), and the like.

  Alternatively, the processing unit 10 may receive the file management program 32 and the data file 34 stored in a device such as a personal computer (server) via the communication unit 70 and store them in the storage unit 30.

  FIG. 6 is a diagram illustrating the configuration of the mcdp file described with reference to FIGS. 1 to 4, which is an example of the high-speed display file 36. In the present embodiment, the high-speed display file (mcdp file) 36 includes a header file 36a and a bitmap for each display page Pk (k = 1 to n) of the data file 34 (for example, a pdf file). A data file 36b, a vector data file 36c, and an incidental information file 36d are included. In short, when the data file 34 includes display data for n pages, the high-speed display file (mcdp file) 36 obtained by converting the data file 34 includes one header file 36a and n bitmap data files 36b. , N vector data files 36c and n additional information files 36d.

  The header file 36a includes meta information such as the number of pages and the file name.

  In the bitmap data file 36b (for example, a png file), one page of display data is converted into bitmap format image data (hereinafter referred to as "bitmap data") in accordance with the attributes of the display unit of the image display terminal 3. ")" Is included.

  In the vector data file 36c, vectors of handwritten figures, characters, bookmarks, underlines, etc. (an example of first additional information) added using functions such as handwriting, bookmarks, and underlines in the image display terminal 3 Format data (hereinafter referred to as “vector data”) is included.

  In the incidental information file 36d, incidental information is stored. The auxiliary information includes, for example, the page number, the total number of pixels of the display (display unit) of the image display terminal 3 (vertical pixel number × horizontal pixel number), presence / absence of added vector data (data is stored in the vector data file 36c). This is attribute information of each page such as a data addition flag indicating whether or not it exists.

  The image display terminal 3 is capable of high-speed display by using the high-speed display file (mcdp file) 36 configured as described above.

1-3. Configuration of Image Display Terminal FIG. 7 is an external view of the image display terminal 3 of the present embodiment, and FIG. 8 is a diagram illustrating a hardware configuration example of the image display terminal 3 of the present embodiment.

  As illustrated in FIG. 8, the image display terminal 3 according to the present embodiment includes a storage unit 100, a processing unit 110, an operation unit 120, a storage unit 130, a display control unit 140, a display unit 150, a sound output unit 160, and a communication unit 170. These components are configured to be able to exchange various data via the bus 180. The image display terminal 3 of the present embodiment may have a configuration in which some of the components (each unit) in FIG. 8 are omitted or changed, or other components are added.

  The operation unit 120 is an input device such as an input button used for an input operation by a user, and includes various hard buttons 120a, various soft buttons 120b, and the like (see FIG. 7).

  The storage unit 100 (an example of a second storage unit) includes a data file 34 (for example, the pdf file described with reference to FIGS. 1 to 4) transferred from the information processing apparatus 2 and a high-speed display file 36 (for example, FIG. 1). A storage device such as a built-in NAND flash memory for storing (the mcdp file described in FIG. 4).

  The storage unit 130 stores programs, data, and the like for the processing unit 110 to perform various calculation processes and control processes. In particular, in the present embodiment, the storage unit 130 stores (installs) a file management program 132 for performing processing such as folder display and file operation. The storage unit 130 stores (installs) an application program 134 for browsing and editing the data file 34 (pdf file) using the high-speed display file 36 (mcdp file).

  The storage unit 130 is also used as a work area of the processing unit 110. In this embodiment, the storage unit 130 includes bitmap data, vector data, and user data included in the high-speed display file 36 (mcdp file) as a part of the storage area. A frame buffer 136 is provided for storing vector data such as figures and characters created in response to a predetermined input operation.

  The sound output unit 160 is a device that outputs sound such as a speaker, and outputs various sounds (including sound) based on signals output from the processing unit 110.

  The communication unit 170 is for performing data communication with other devices by wire or wireless under the control of the processing unit 110. The communication unit 170 may be a USB interface to which a USB cable or the like is connected, for example. In this case, communication with the information processing apparatus 2 having a USB interface is possible via the communication unit 170.

  The display unit 150 is a display device (display) including the electronic paper 152, and an image corresponding to the image data stored in the frame buffer 136 is displayed on the electronic paper 152. Various types of electronic paper 152 can be used. For example, an electrophoresis type that switches charged particles by moving the display, a particle rotation type that switches charged particles by rotating the charged particles, or a magnetophoretic method that switches particles by moving the particles by magnetism For example, a display method using a thin battery-driven thin liquid crystal or an EL element, a display method using a liquid crystal having a memory property typified by a ferroelectric liquid crystal, or the like can be used as appropriate.

  The display unit 150 further includes a contact detection unit 154 (digitizer). The contact detection unit 154 (digitizer) is provided to face the display surface of the electronic paper 152 and detects a position where an input touch pen (hereinafter simply referred to as “pen”), a user's finger, or the like has contacted the electronic paper 152. And output information of the contact position. For example, when the user performs an operation of inputting characters, graphics, or the like using a pen, or a page operation such as page turning or page returning by sliding a finger, the contact detection unit 154 (digitizer) performs these operations. Outputs information of the contact position when it is performed.

  FIG. 9 is a diagram illustrating a configuration example of the display unit 150. The example of FIG. 9 is an active matrix type electrophoretic display (EPD), which includes an EPD panel as the electronic paper 152. In FIG. 9, the contact detection unit 154 (digitizer) is not shown.

  As shown in FIG. 9, the display unit 150 includes an electronic paper 152 (EPD panel), a scanning line driving circuit 221, a data line driving circuit 222, and a common power supply modulation circuit 224.

  The scanning line driving circuit 221, the data line driving circuit 222, and the common power supply modulation circuit 224 are each connected to a display control unit 140 (EPD controller) (not shown in FIG. 9), and control signals generated by the display control unit 140 A control signal 144a, a control signal 144b, and a control signal 144c, which are a part of 144, are supplied.

  In the electronic paper 152 (EPD panel), a plurality of scanning lines 226 extending from the scanning line driving circuit 221 and a plurality of data lines 228 extending from the data line driving circuit 222 are formed. A plurality of pixels 200 are provided.

  The scanning line driving circuit 221 is connected to each pixel 200 by j scanning lines 226 (Y1, Y2,..., Yj). The scanning line driving circuit 221 sequentially selects the scanning lines 226 from the first row to the j-th row according to the control signal 144a, so that a driving TFT (Thin Film Transistor) 208 provided in the pixel 200 (see FIG. 10). A selection signal that defines the ON timing of the signal is supplied.

  The data line driving circuit 222 is connected to each pixel 200 by k data lines 228 (X1, X2,..., Xk). The data line driving circuit 222 supplies a 1-bit image signal to each of the pixels 200 in accordance with the control signal 144b based on the transfer data. In this embodiment, when defining pixel data “0”, a low-level image signal is supplied to the pixel 200, and when defining pixel data “1”, a high-level image signal is applied to the pixel 200. 200.

  The electronic paper 152 (EPD panel) also includes a low-potential power line 209 (Vss), a high-potential power line 210 (Vdd), a common electrode wiring 215 (Vcom), and a first pulse signal extending from the common power modulation circuit 224. A line 251 (S 1) and a second pulse signal line 252 (S 2) are provided, and each wiring is connected to the pixel 200. The common power supply modulation circuit 224 generates various signals to be supplied to each of the wirings according to the control signal 144c, and electrically connects and disconnects these wirings (high impedance, Hi-Z).

  FIG. 10 is a circuit configuration diagram of the pixel 200 of FIG. In FIG. 10, the same wiring as that in FIG. In FIG. 10, the common electrode wiring 215 common to all the pixels is not shown.

  As shown in FIG. 10, the pixel 200 is provided with a driving TFT 208, a latch circuit 230, and a switch circuit 240. The pixel 200 has an SRAM (Static Random Access Memory) type configuration in which an image signal is held as a potential by the latch circuit 230.

  The driving TFT 208 is a pixel switching element composed of an N-MOS transistor. The gate terminal of the driving TFT 208 is connected to the scanning line 226, the source terminal is connected to the data line 228, and the drain terminal is connected to the data input terminal of the latch circuit 230. The latch circuit 230 includes a transfer inverter 230t and a feedback inverter 230f. A power supply voltage is supplied to the inverters 230t and 230f from the low potential power supply line 209 (Vss) and the high potential power supply line 210 (Vdd).

  The switch circuit 240 includes transmission gates TG1 and TG2, and outputs a signal to the pixel electrode 195 (see FIGS. 11B and 11C) according to the level of the pixel data stored in the latch circuit 230. . Note that Va means a potential applied to the pixel electrode of one pixel 200.

  When pixel data “1” (high-level image signal) is stored in the latch circuit 230 and the transmission gate TG1 is turned on, the switch circuit 240 supplies a pulse signal (drive pulse) S1 as Va. On the other hand, when pixel data “0” (low-level image signal) is stored in the latch circuit 230 and the transmission gate TG2 is turned on, the switch circuit 240 supplies a pulse signal (drive pulse) S2 as Va. With such a circuit configuration, the potential applied to the pixel electrode of each pixel 200 can be controlled by the control unit.

  The electronic paper 152 (EPD panel) of the present embodiment may be, for example, a two-particle microcapsule type electrophoresis type EPD panel. If the dispersion is colorless and transparent, and the electrophoretic particles are white or black, at least two colors can be displayed with two colors of white or black as basic colors.

  FIG. 11A illustrates an example of a structure of a microcapsule. The microcapsule 260 encloses, for example, a colorless transparent dispersion, a plurality of white particles (electrophoretic particles) 267, and a plurality of black particles (electrophoretic particles) 266. In the present embodiment, for example, it is assumed that the white particles 267 are negatively charged and the black particles 266 are positively charged.

  FIG. 11B is a partial cross-sectional view of the electronic paper 152 (EPD panel). The electronic paper 152 (EPD panel) includes a drive electrode layer 280 in which a plurality of pixel electrodes 195 are formed on the microcapsule 260 side of the element substrate 270. In FIG. 11B, a pixel electrode 195A and a pixel electrode 195B are shown as the pixel electrode 195. The pixel electrode 195 can supply a potential to each pixel (for example, Va and Vb). Here, a pixel having the pixel electrode 195A is referred to as a pixel 200A, and a pixel having the pixel electrode 195B is referred to as a pixel 200B. The pixel 200A and the pixel 200B are two pixels corresponding to the pixel 200 (see FIGS. 9 and 10).

  On the other hand, the counter substrate 271 is a transparent substrate, and an image is displayed on the counter substrate 271 side in the display unit. The electronic paper 152 (EPD panel) includes a common electrode layer 282 in which a planar common electrode 197 is formed on the microcapsule 260 side of the counter substrate 271. The common electrode 197 is a transparent electrode. Unlike the pixel electrode 195, the common electrode 197 is an electrode common to all the pixels, and the potential Vcom is applied.

  Microcapsules 260 are arranged in an electrophoretic display layer 290 provided between the common electrode layer 282 and the drive electrode layer 280, and the electrophoretic display layer 290 becomes a display region. A desired display color can be displayed for each pixel in accordance with a potential difference between the common electrode 197 and a pixel electrode (for example, 195A and 195B).

  In FIG. 11B, the common electrode side potential Vcom is higher than the potential Va of the pixel electrode of the pixel 200A. At this time, the negatively charged white particles 267 are attracted to the common electrode 197 side, and the positively charged black particles 266 are attracted to the pixel electrode 195A side, so that the pixel 200A is visually recognized as displaying white.

  In FIG. 11C, the common electrode side potential Vcom is lower than the potential Va of the pixel electrode of the pixel 200A. At this time, on the contrary, the positively charged black particles 266 are attracted to the common electrode 197 side, and the negatively charged white particles 267 are attracted to the pixel electrode 195A side, so that it is visually recognized that the pixel 200A displays black. Is done. Note that the structure in FIG. 11C is similar to that in FIG. In addition, in FIGS. 11B and 11C, Va, Vb, and Vcom are described as fixed potentials. However, Va, Vb, and Vcom actually change with time.

  Here, in the example of the pixel 200A in FIGS. 11B and 11C, the white particles 267 and the black particles 266 are all drawn toward the common electrode 197 side (so-called saturated state), respectively. Yes. However, it is possible not only to display the basic colors (white and black) in a saturated state but also to display intermediate colors (light gray and dark gray) by applying an electric field in the opposite direction for an appropriate time, for example.

  Returning to FIG. 8, the display control unit 140 (EPD controller) generates a control signal 144 and displays an image corresponding to the image data written in the frame buffer 136 on the electronic paper 152 (EPD panel) of the display unit 150 (display). Control to display on the screen. The display control unit 140 (EPD controller) is provided with a memory pipeline 142 for managing a history of image data corresponding to an image displayed on the electronic paper 152 (EPD panel). The memory pipeline 142 holds history information of image data (image data written in the frame buffer 136) corresponding to an image displayed on the electronic paper 152 (EPD panel) in time series. The display control unit 140 (EPD controller) is configured to display electronic paper 152 (EPD panel) based on characteristic information (color and brightness of each pixel) to be displayed next and history information held in the memory pipeline 142. Control is performed to generate a drive pulse at an optimum number of times and intervals in consideration of the display characteristics, and to display the next image on the electronic paper 152 (EPD panel).

  The processing unit 110 performs various calculation processes and control processes in accordance with various programs stored in the storage unit 130. In particular, in the present embodiment, the processing unit 110 includes an input operation detection processing unit 112, a file management unit 114, and an image display processing unit 116. However, the processing unit 110 of the present embodiment may have a configuration in which some of these configurations (elements) are omitted or changed, or other configurations (elements) are added.

  The input operation detection processing unit 112 performs a process of detecting an input operation by the user based on an operation signal from the operation unit 120 or the contact detection unit 154 (digitizer).

  Based on the detection result of the input operation detection processing unit 112, the file management unit 114 (an example of a second file management unit) performs an input operation (file) on a file selected from the files displayed on the display unit 150. Process according to the operation). In particular, in the present embodiment, the file management unit 114 performs a process of displaying the data file 34 on the display unit 150 without displaying the high-speed display file 36 as a file operation target. Note that the processing unit 110 may function as the file management unit 114 by executing the file management program 132.

  The processing unit 110 functions as the image display processing unit 116 by executing the application program 134. Specifically, when the image display processing unit 116 writes image data to the frame buffer 136, the display control unit 140 controls the electronic paper 152 based on the image data, and an image corresponding to the image data is displayed on the display unit 150. Is displayed.

  In particular, in the present embodiment, the image display processing unit 116 performs processing for displaying an image on the display unit 150 using the bitmap data included in the high-speed display file 36 when a browsing operation is performed on the data file 34. Do. Specifically, the image display processing unit 116 writes image data stored in the bitmap data file 36 b corresponding to the display target page of the data file 34 included in the high-speed display file 36 into the frame buffer 136. I do. In addition, the image display processing unit 116 converts the vector data stored in the vector data file 36c corresponding to the display target page into bitmap data and writes it into the frame buffer 136.

  The file management program 132 and the application program 134 may be stored in the storage unit 130 from the beginning, but the processing unit 110 stores the file management program 132 and the application program stored in a computer-readable information storage medium. 134 may be read and stored in the storage unit 130. Alternatively, the processing unit 110 may receive the file management program 132 and the application program 134 stored in a device such as a personal computer (server) via the communication unit 170 and store them in the storage unit 130.

1-4. Processing of Display System The processing flow of the information processing device 2 and the image display terminal 3 in the display system 1 of the present embodiment will be described. In the following description, it is assumed that the data file 34 is a pdf file and the high-speed display file 36 is an mcdp file, corresponding to FIGS.

[Processing of information processing device]
FIG. 12 is a diagram illustrating a part of a flowchart of a process for a file operation performed by the processing unit 10 of the information processing apparatus 2.

  As illustrated in FIG. 12, when a folder reference operation (an operation for referring to a folder) of the image display terminal 3 is performed via the operation unit 20 (Y in S10), the processing unit 10 performs a target folder (folder reference operation). The folder (xxx.pdf in FIGS. 1 to 4) in the pdf folder (/ root / data / pdf in FIGS. 1 to 4) immediately below the target folder (/ root in FIGS. 1 or 4). / Data) file (S12).

  When the copy operation of the pdf file is performed from the information processing apparatus 2 to the target folder of the image display terminal 3 (Y in S14), the processing unit 10 performs a file conversion & transfer process (S16) described later. The file conversion & transfer process in step S16 corresponds to the process of the information processing apparatus 2 for the operation shown in FIG.

  When a pdf file copy operation is performed from the target folder of the image display terminal 3 to the information processing apparatus 2 (Y in S18), the processing unit 10 performs a file transfer & composition process described later (S20). The file transfer & synthesis process in step S20 corresponds to the process of the information processing apparatus 2 for the operation shown in FIG.

  When a rename, delete, move, or copy operation is performed on a pdf file in the target folder of the image display terminal 3 (Y in S22), the processing unit 10 performs a rename / delete / move / copy process described later. (S24). This copy operation is an operation for copying a file in the target folder to another folder in the image display terminal 3, and a file copy operation from the target folder to the information processing apparatus 2 (copy operation in step S18). Is different.

  Then, the processing unit 10 repeatedly performs the processes of steps S12 to S24 until the folder reference operation of the image display terminal 3 is completed.

  FIG. 13 is a diagram illustrating a part of a flowchart of file conversion & transfer processing (processing in step S16 in FIG. 12) by the processing unit 10 of the information processing apparatus 2.

  As shown in FIG. 13, the processing unit 10 first performs structural analysis of a pdf file (xxx.pdf in FIG. 1) (S100).

  Next, the processing unit 10 selects the first page of the pdf file (S102), and creates a vector data file 36c (empty file) of the selected page (first page) (S104).

  Next, the processing unit 10 converts the display data (text, image, figure) of the page into bitmap data that matches the attribute of the display unit 150 of the image display terminal 3, and the bitmap data file 36b of the page. Is created (S106).

  Next, the processing unit 10 creates an incidental information file 36d for the page (S108).

  If the page is not the final page (N in S110), the processing unit 10 selects the next page of the pdf file (S112), and performs the processes in steps S104 to S110 again.

  On the other hand, if the page is the last page (Y in S110), the processing unit 10 creates the header file 36a and combines it with the bitmap data file 36b, the vector data file 36c, and the incidental information file 36d of each page. An mcdp file (xxx.mcdp in FIG. 1) having the same name as the pdf file is created (S114).

  Next, the processing unit 10 copies the pdf file (xxx.pdf in FIG. 1) to the pdf folder (/ root / data / pdf in FIG. 1) immediately below the target folder of the image display terminal 3 (S116).

  Finally, the processing unit 10 moves the mcdp file created in step S114 to the mcdp folder (/ root / data / mcdp in FIG. 1) immediately below the target folder of the image display terminal 3 (S118). finish.

  FIG. 14 is a diagram illustrating a part of a flowchart of the file transfer & synthesis process (the process of step S20 of FIG. 12) by the processing unit 10 of the information processing apparatus 2.

  As illustrated in FIG. 14, the processing unit 10 first stores the pdf file (xxx.pdf in FIG. 4) in the pdf folder (/ root / data / pdf in FIG. 4) immediately below the target folder of the image display terminal 3. Copy to the work area of the storage unit 30 of the information processing apparatus 2 (S200).

  Next, the processing unit 10 creates an mcdp file (xxx.mcdp in FIG. 4) having the same name as the pdf file in the mcdp folder (/ root / data / mcdp in FIG. 4) immediately below the target folder of the image display terminal 3. Referring to the supplementary information file 36d of each page included in the page, it is determined whether or not vector data is added to each page based on the data addition flag, and the vector data file 36c of each page to which the vector data is added And is copied to the work area of the storage unit 30 of the information processing apparatus 2 (S202).

  Next, the processing unit 10 analyzes the structure of the pdf file (xxx.pdf in FIG. 4) copied in step S200 (S204).

  Next, the processing unit 10 selects the first page of the pdf file (S206), and the display data (text, image, figure) of the selected page (first page) is added to the vector data file 36c of the page. Is synthesized as another object (for example, pdf annotation) (S208).

  If the page is not the last page (N in S212), the processing unit 10 selects the next page of the pdf file (S214), and performs the process in step S208 again.

  On the other hand, if the page is the last page (Y in S212), the processing unit 10 moves the pdf file synthesized in steps S206 to S214 to the copy destination folder (S216), and ends the process.

  FIG. 15 is a diagram illustrating a part of a flowchart of the rename / delete / move / copy process (the process in step S24 in FIG. 12) by the processing unit 10 of the information processing apparatus 2.

  As shown in FIG. 15, when the rename operation is performed (Y in S300), the processing unit 10 displays the pdf folder (/ root / data / pdf in FIG. 1 or 4) directly under the target folder of the image display terminal 3. The name of the pdf file (xxx.pdf in FIG. 1 or 4) is changed (for example, to yyy.pdf) (S302).

  Further, the processing unit 10 has the same name as the pdf file in the mcdp file (xxx.mcdp in FIG. 1 or FIG. 4) in the mcdp folder (/ root / data / mcdp in FIG. 1 or FIG. 4) immediately below the target folder. The name is changed to (yyyy.mcdp) (S304), and the process is terminated.

  When a deletion operation is performed (Y in S306), the processing unit 10 displays the pdf file in the pdf folder (/ root / data / pdf in FIG. 1 or 4) immediately below the target folder of the image display terminal 3. (Xxx.pdf in FIG. 1 or FIG. 4) is deleted (S308).

  Further, the processing unit 10 deletes the mcdp file (xxx.mcdp in FIG. 1 or FIG. 4) in the mcdp folder (/ root / data / mcdp in FIG. 1 or FIG. 4) immediately below the target folder (S310). End the process.

  When the move operation is performed (Y in S312), the processing unit 10 displays the pdf file in the pdf folder (/ root / data / pdf in FIG. 1 or 4) immediately below the target folder of the image display terminal 3. (Xxx.pdf in FIG. 1 or FIG. 4) is moved to the pdf folder (/ root / data1 / pdf) immediately below the destination folder (for example, / root / data1) of the image display terminal 3 (S314).

  Furthermore, the processing unit 10 moves the mcdp file (xxx.mcdp in FIG. 1 or FIG. 4) in the mcdp folder (/ root / data / mcdp in FIG. 1 or FIG. 4) immediately below the target folder to the destination folder (/ root). It moves to the mcdp folder (/ root / data1 / mcdp) directly under / data1) (S316), and ends the process.

  When the copy operation is performed (Y in S318), the processing unit 10 displays the pdf file in the pdf folder (/ root / data / pdf in FIG. 1 or 4) immediately below the target folder of the image display terminal 3. (Xxx.pdf in FIG. 1 or FIG. 4) is copied to the pdf folder (/ root / data1 / pdf) directly under the copy destination folder (for example, / root / data1) of the image display terminal 3 (S320).

  Further, the processing unit 10 copies the mcdp file (xxx.mcdp in FIG. 1 or FIG. 4) in the mcdp folder (/ root / data / mcdp in FIG. 1 or FIG. 4) immediately below the target folder to the copy destination folder (/ root). The file is copied to the mcdp folder (/ root / data1 / mcdp) directly under / data1) (S322), and the process ends.

[Image display terminal processing]
FIG. 16 is a diagram illustrating a part of a flowchart of processing performed by the processing unit 110 of the image display terminal 3.

  As shown in FIG. 16, when the folder reference operation of the image display terminal 3 is performed (Y in S400), the processing unit 110 is in the pdf folder (/ root / data / pdf in FIG. 2) immediately below the target folder. The file (xxx.pdf in FIG. 2) is displayed as a file in the target folder (/ root / data in FIG. 2) (S402).

  When a rename, delete, move or copy operation is performed on a pdf file in the target folder (Y in S404), the processing unit 110 performs a rename / delete / move / copy process (S406).

  Further, when a browsing operation of the pdf file in the target folder is performed (Y in S408), the processing unit 110 performs a file browsing and editing process described later (S410).

  FIG. 17 is a diagram illustrating a part of a flowchart of the rename / delete / move / copy process (the process of step S406 in FIG. 16) by the processing unit 110 of the image display terminal 3.

  As illustrated in FIG. 17, when a rename operation is performed (Y in S500), the processing unit 110 displays a pdf file (FIG. 2) in a pdf folder (/ root / data / pdf in FIG. 2) immediately below the target folder. Xxx.pdf) is changed (for example, to yyy.pdf) (S502).

  Furthermore, the processing unit 110 renames the mcdp file (xxx.mcdp in FIG. 2) in the mcdp folder (/ root / data / mcdp in FIG. 2) immediately below the target folder to the same name (yyy.mcdp) as the pdf file. (S504), and the process ends.

  When a deletion operation is performed (Y in S506), the processing unit 110 displays a pdf file (xxx.pdf in FIG. 2) in the pdf folder (/ root / data / pdf in FIG. 2) immediately below the target folder. Is deleted (S508).

  Further, the processing unit 110 deletes the mcdp file (xxx.mcdp in FIG. 2) in the mcdp folder (/ root / data / mcdp in FIG. 2) immediately below the target folder (S510), and ends the process.

  When the move operation is performed (Y in S512), the processing unit 110 displays the pdf file (xxx.pdf in FIG. 2) in the pdf folder (/ root / data / pdf in FIG. 2) immediately below the target folder. Is moved to the pdf folder (/ root / data1 / pdf) immediately below the destination folder (for example, / root / data1) (S514).

  Further, the processing unit 110 transfers the mcdp file (xxx.mcdp in FIG. 2) in the mcdp folder (/ root / data / mcdp in FIG. 2) immediately below the target folder directly below the destination folder (/ root / data1). It moves to the mcdp folder (/ root / data1 / mcdp) (S516) and ends the process.

  When the copy operation is performed (Y in S518), the processing unit 110 displays the pdf file (xxx.pdf in FIG. 2) in the pdf folder (/ root / data / pdf in FIG. 2) immediately below the target folder. Is copied to the pdf folder (/ root / data1 / pdf) immediately below the copy destination folder (for example, / root / data1) (S520).

  Further, the processing unit 110 stores the mcdp file (xxx.mcdp in FIG. 2) in the mcdp folder (/ root / data / mcdp in FIG. 2) immediately below the target folder in the copy destination folder (/ root / data1). Copying to the mcdp folder (/ root / data1 / mcdp) (S522), the process ends.

  FIG. 18 is a diagram illustrating a part of a flowchart of file browsing & editing processing (processing in step S410 in FIG. 16) by the processing unit 110 of the image display terminal 3.

  As shown in FIG. 18, the processing unit 110 selects the first page included in the mcdp file (xxx.mcdp in FIG. 3) in the mcdp folder (/ root / data / mcdp in FIG. 3) immediately below the target folder. Then, the bitmap data contained in the bitmap data file 36b of the selected page (first page) is displayed on the display unit 150 (S602).

  Next, the processing unit 110 refers to the incidental information file 36d of the selected page (first page) included in the mcdp file, and determines whether vector data exists based on the data addition flag (S604). ).

  When vector data exists in the selected page (first page) (Y in S606), the processing unit 110 converts the vector data included in the vector data file 36c of the selected page (first page) into bitmap data. And displayed on the display unit 150 (S608).

  When a page change operation such as page feed, page return, or page jump is performed (Y in S610), the processing unit 110 selects a change destination page (S612), and the processes in steps S602 to S608 are performed again. I do.

  When a vector image editing operation such as a handwritten figure, character, bookmark, or underline is performed (Y in S614), the processing unit 110 performs a vector image editing process described later (S616).

  Then, the processing unit 110 repeats the processes in steps S602 to S616 until an operation for ending browsing is performed (N in S618), and ends the process when an operation for ending browsing is performed (Y in S618).

  FIG. 19 is a diagram illustrating a part of a flowchart of vector image editing processing (processing in step S616 in FIG. 18) by the processing unit 110 of the image display terminal 3.

  As shown in FIG. 19, when a vector image addition operation is performed (Y in S700), the processing unit 110 first creates vector data corresponding to the input operation (addition operation) (S702).

  Next, the processing unit 110 converts the vector data created in step S702 into bitmap data and displays it on the display unit 150 (S704).

  Next, the processing unit 110 adds the vector data created in step S702 to the vector data file 36c of the page selected in step S600 or S612 in FIG. 18 (S706).

  Finally, the processing unit 110 sets a data addition flag in the incidental information file 36d of the selected page (S708) and ends the process.

  When a vector image change operation is performed (Y in S710), the processing unit 110 first changes the vector data in accordance with the input operation (change operation) (S712).

  Next, the processing unit 110 creates bitmap data of the background image of the change area of the vector image and displays it on the display unit 150 (S714).

  Next, the processing unit 110 converts the vector data changed in step S712 into bitmap data and displays it on the display unit 150 (S716).

  Finally, the processing unit 110 changes the vector data in the vector data file 36c of the page selected in step S600 or S612 of FIG. 18 (overwritten with the vector data changed in step S712) (S718), and ends the process. .

  When a vector image deletion operation is performed (Y in S720), the processing unit 110 creates bitmap data of an image in the vector image deletion area and displays it on the display unit 150 (S722).

  Next, the processing unit 110 deletes the vector data of the vector image from the vector data file 36c of the page selected in step S600 or S612 of FIG. 18 (S724).

  If there is no other vector data in the vector data file 36c of the selected page (Y in S726), the processing unit 110 clears the data addition flag in the incidental information file 36d of the selected page. (S728), the process ends.

  As described above, according to the display system of the first embodiment, the information processing apparatus 2 performs the data file operation when the data file 34 (pdf file) is copied to the folder of the image display terminal 3. The display data included in 34 (pdf file) is rendered in accordance with the attribute of the display unit 150 (electronic paper 152) of the image display terminal 3, converted into bitmap data, and the high-speed display file 36 (mcdp file) ). Therefore, the image display terminal 3 may display the bitmap data included in the high-speed display file 36 (mcdp file) when the browsing operation is performed on the data file 34 (pdf file). There is no need to parse and render (pdf file). Therefore, even when a CPU with low processing capability is used as the processing unit 110 of the image display terminal 3, the display can be speeded up and the power consumption of the image display terminal 3 can be reduced.

  Further, according to the display system of the first embodiment, the information processing apparatus 2 and the image display terminal 3 hide the high-speed display file 36 (mcdp file) from the user, and the image display terminal 3 stores the data file 34 (pdf File).

  Further, according to the display system of the first embodiment, when a vector image such as a handwritten character or graphic is added, the image display terminal 3 simply adds the vector data to the vector data file 36c, and the bitmap data There is no need to combine the bitmap data included in the file 36b with the vector data. Therefore, even when a vector image is added, the low processing load and low power consumption of the image display terminal 3 can be maintained.

  In the display system according to the first embodiment, the information processing apparatus 2 combines the vector data added by the image display terminal 3 into a data file 34 (pdf file) as a separate object (pdf annotation). When the combined file is viewed on the display terminal 3, the added vector image is displayed and can be deleted or changed.

  When a vector image is added, the image display terminal 3 sets a data addition flag included in the incidental information file 36d. Therefore, the information processing apparatus 2 uses the data file 34 (pdf file) based on the data addition flag. It is possible to speed up the synthesis process by determining whether or not vector data is added to each page and copying only necessary vector data from the image display terminal 3.

  Further, according to the display system of the first embodiment, the data file 34 (pdf file) and the high-speed display file 36 (mcdp file) that are in a correspondence relationship are renamed / deleted / moved / removed from the data file 34 (pdf file). Rename / delete / move / copy processes are performed for both file operations. Therefore, the information processing apparatus 2 and the image display terminal 3 can easily manage the association between the data file 34 (pdf file) and the high-speed display file 36 (mcdp file) based on the positional relationship between the file name and the folder.

2. Second Embodiment In the first embodiment, the high-speed display file 36 (mcdp file) includes only one set of bitmap data file 36b, vector data file 36c, and incidental information file 36d for each page of the data file 34. Not included. On the other hand, in the second embodiment, the high-speed display file 36 is previously provided with a plurality of bitmap data having different resolutions for enlargement or reduction.

  FIG. 20 is a diagram showing an example of the high-speed display file 36 in the second embodiment. In the second embodiment, the high-speed display file (mcdp file) 36 includes a header file 36a and a bit for each display page Pk (k = 1 to n) of the data file 34 (for example, a pdf file). The first set Pk-1, the second set Pk-2,... Of the map data file 36b, the vector data file 36c, and the incidental information file 36d are configured. Bit map data files 36b of Pk-1, Pk-2,... Store bitmap data having different resolutions, and each incidental information file of Pk-1, Pk-2,. In 36d, resolution information of bitmap data stored in the bitmap data file 36b included in the same set is stored.

  In the second embodiment, the processing unit 10 of the information processing apparatus 2 performs the processing of steps S102 to S112 for the data file 34 in each of a plurality of predetermined resolutions in the file conversion & transfer processing shown in FIG. By performing it a plurality of times while selecting, the high-speed display file 36 (mcdp file) shown in FIG. 20 is created in step S114.

Further, the processing unit 110 of the image display terminal 3 performs an enlargement operation or a reduction operation at a predetermined magnification on the displayed page in the file browsing & editing process illustrated in FIG. From the plurality of incidental information files 36d on the page, the incidental information file 36d including information on the resolution that matches the resolution according to the magnification of the enlargement operation or the reduction operation is determined. Then, the processing unit 110 writes the bitmap data included in the bitmap data file 36b of the same set as the incidental information file 36d to the frame buffer 136, and updates the display of the display unit 150.
Since other configurations and processes of the display system of the second embodiment are the same as those of the first embodiment, illustration and description thereof are omitted.

  According to the display system of the second embodiment, it is possible to speed up the display of enlarged images and reduced images at a predetermined magnification while suppressing battery consumption.

3. Third Embodiment In the first embodiment, bitmap data matching the attributes of the display unit 150 (electronic paper 152) of the image display terminal 3 is stored in the bitmap data file 36b of the high-speed display file 36 (mcdp file). Saved. That is, the processing unit 10 of the information processing apparatus 2 performs the total number of pixels (vertical pixel number × horizontal number) determined in advance according to the model of the target image display terminal 3 in the file conversion & transfer process shown in FIG. Bitmap data of the number of pixels) and the number of display colors (gradations) are created.

  On the other hand, in the third embodiment, the processing unit 10 of the information processing apparatus 2 is an image display terminal in which attribute information of the display unit 150 (electronic paper 152) for each of a plurality of types of image display terminals 3 is defined. Based on the model information 3, file conversion & transfer processing is performed on the display data in the data file 34.

  FIG. 21 is a diagram illustrating an example of model information of the image display terminal 3. The model information 38 shown in FIG. 21 is a correspondence table in which a correspondence relationship between the identification number (ID) of the model of the image display terminal 3 and the attribute information of the display unit 150 is defined. For example, the model information 38 is stored in the storage unit 30. Yes. The attribute information of the display unit 150 is information such as the total number of pixels (the number of vertical pixels × the number of horizontal pixels) and the number of display colors (gradation).

  In the third embodiment, for example, as illustrated in FIG. 1, the processing unit 10 of the information processing device 2 displays the image display terminal 3 when the information processing device 2 is connected to the image display terminal 3 with a USB cable 4 or the like. The identification information (ID) is acquired from the information, and the identification information (ID) is stored in the storage unit 30. Then, the processing unit 10 of the information processing apparatus 2 displays the identification information (ID) of the image display terminal 3 stored in the storage unit 30 and the image display in the process of step S106 of the file conversion & transfer process shown in FIG. Referring to the model information 38 of the terminal 3, the attribute information of the display unit 150 associated with the identification information (ID) is extracted from the model information 38, and the display data of each page of the data file 34 is used as the attribute information. Convert to bitmap data suitable for.

Note that the attribute information of the display unit 150 is stored in advance as model information in the storage unit 130 or the like. For example, as illustrated in FIG. 1, the information processing apparatus 2 is connected to the image display terminal 3 through the USB cable 4 or the like. The image display terminal 3 may read out the model information (attribute information of the display unit 150) and store it in the storage unit 30. In this case, the processing unit 10 of the information processing apparatus 2 refers to the model information stored in the storage unit 30 in the process of step S106 of the file conversion & transfer process illustrated in FIG. The page display data may be converted into bitmap data that matches the model information (attribute information).
Since other configurations and processes of the display system of the third embodiment are the same as those of the first embodiment, illustration and description thereof are omitted.

  According to the display system of the third embodiment, the display data included in the data file 34 can be converted into bitmap data having an appropriate resolution according to the model of the image display terminal. Therefore, a highly versatile display system can be realized.

  Note that examples of the image display terminal 3 other than the electronic book terminal include a smartphone and a wristwatch as shown in FIGS. 22A and 22B.

  FIG. 22A is an external view of the smartphone 500. The smartphone 500 includes a case 502. Three operation buttons 511, 512 and 513 are provided on the front surface of the case 502. In addition, a display unit 504 including electronic paper such as an EPD panel is provided on the front surface of the case 502, and various types of information (images) are displayed on the surface of the electronic paper. A data file 34 and a high-speed display file 36 are stored in the built-in memory, and the built-in CPU uses the high-speed display file 36 to place a pen (not shown) on the surface of the electronic paper of the display unit 504. An image corresponding to the operation by the operation buttons 511, 512, 513 and the like is displayed at high speed.

  FIG. 22B is an external view of the wristwatch 600. The wristwatch 600 includes a case 602 and a pair of bands 603 connected to the case 602. Two operation buttons 611 and 612 are provided on the side surface of the case 602. A display unit 604 including electronic paper such as an EPD panel is provided on the front surface of the case 602, and various information (images) are displayed on the surface of the electronic paper in addition to time. A data file 34 and a high-speed display file 36 are stored in the built-in memory, and the built-in CPU uses the high-speed display file 36 to place a pen (not shown) on the surface of the electronic paper of the display unit 604. An image corresponding to the operation by the operation buttons 611, 612 and the like is displayed at high speed.

In addition to this, as the image display terminal 3 of the present embodiment, for example, an electronic signboard (digital signage), a personal computer, a mobile phone, a digital still camera, a television, a video camera, a video tape recorder, a car navigation device, An electronic notebook, an electronic game machine, etc. are mentioned.
The present invention is not limited to the present embodiment, and various modifications can be made within the scope of the gist of the present invention.

4). Fourth Embodiment In the description of the present embodiment, the same components as those described in the above-described embodiments are given the same numbers, and descriptions thereof are omitted. The fourth embodiment is an embodiment in which the internal configuration of the image display terminal device is different from the above-described embodiment.

  FIG. 23 shows the image display terminal 5 in the present embodiment. The image display terminal 3 includes a controller 1110 having the processing unit 110, the display control unit 140, and the peripheral device control unit 1112 as one integrated circuit.

  The peripheral device control unit 1112 is a part that controls peripheral devices such as a wireless LAN, although not shown. The communication unit 170 is included in the peripheral device control unit 1112 in this embodiment. Further, the information processing apparatus in the present embodiment may be the information processing apparatus 2 in the above-described embodiment.

  The display system in the present embodiment includes an information processing device having a first file management unit and an image display terminal device having a second file management unit, and the first file management unit includes the first file The display image is displayed using the first display data included in the information, and the second file management unit displays the display image using the second display data included in the second file information. The second file information includes first display data and second display data, and the second file information transfers the first file information from the information processing apparatus to the image display terminal apparatus. Sometimes it is generated in the first file management unit.

  The second display data may be data in a format that matches the attribute of the display unit of the image display terminal device.

  The image display terminal device has a function of acquiring the first additional information written in the display unit and adding the first additional information to the second file information. The second file management unit includes the second display data and the first data The display image may be displayed using the additional information.

  The second file management unit generates third file information including the first display data and the first additional information when the second file information is transferred from the image display terminal device to the information processing device. The first file management unit manages the third file information as new first file information, and displays the display image using the first display data and the first additional information. Good.

  Each of the information processing device and the image display terminal device may be used as an independent device.

  The second display data may be bitmap format data, and the first additional information may be vector format data.

  The display control unit that controls the display unit and the second file management unit may be configured as one semiconductor circuit device.

  The image display terminal device according to the present embodiment includes a storage unit, a writable display unit, and a file management unit. The storage unit stores file information created by another device, and the file information is The file management unit includes the first display data and the second display data, and the file management unit acquires the first additional information written by the user in the display unit and adds the first additional information to the file information. When displaying an image on the display unit using the image data and the first additional information and outputting the contents of the file information to another device, the file management unit includes the first display data, the first additional information, May be output.

  The above-described embodiments are examples, and the present invention is not limited to these. For example, the embodiments can be appropriately combined.

  The present invention includes configurations that are substantially the same as the configurations described in the embodiments (for example, configurations that have the same functions, methods, and results, or configurations that have the same objects and effects). In addition, the invention includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. In addition, the present invention includes a configuration that exhibits the same operational effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

  DESCRIPTION OF SYMBOLS 1 Display system, 2 Information processing apparatus, 3 Image display terminal, 5 Image display terminal, 10 Processing part, 12 Input operation detection processing part, 14 File management part, 20 Operation part, 22 Keyboard, 24 Mouse, 30 Storage part, 32 File management program, 34 data file, 36 high-speed display file, 38 model information of image display terminal, 50 display unit (display), 60 sound output unit (speaker), 70 communication unit (USB interface), 100 storage unit, 110 Processing unit, 112 Input operation detection processing unit, 114 File management unit, 116 Image display processing unit, 120 Operation unit, 120a, 120b Button, 130 Storage unit, 132 File management program, 132 Application program, 136 Frame buffer, 140 Display control Department ( PD controller), 142 memory pipeline, 144, 144a, 144b, 144c control signal, 150 display unit (display), 152 electronic paper (EPD panel), 154 contact detection unit (digitizer), 160 sound output unit (speaker), 170 Communication unit (USB interface), 195, 195A, 195B pixel electrode, 197 common electrode, 200, 200A, 200B pixel, 208 driving TFT, 209 low potential power line (Vss), 210 high potential power line (Vdd), 215 Common electrode wiring (Vcom), 221 Scan line drive circuit, 222 Data line drive circuit, 224 Common power supply modulation circuit, 226 Scan line, 228 Data line, 230 Latch circuit, 240 Switch circuit, 251 First pulse signal line ( S1), 2 52 Second pulse signal line (S2), 260 microcapsules, 266 black particles, 267 white particles, 270 element substrate, 271 counter substrate, 280 drive electrode layer, 282 common electrode layer, 290 electrophoretic display layer, 500 smartphone, 502 case, 504 display unit, 511, 512, 513 operation button, 600 wristwatch, 602 case, 603 band, 604 display unit, 611, 612 operation button, 1110 controller, 1112 peripheral device control unit.

Claims (19)

An information processing apparatus including a first storage unit and a first file management unit;
An image display terminal device that includes a display unit, a second storage unit, and a second file management unit, and displays information on the file transferred from the information processing device;
Including
A first file including first display data is stored in the first storage unit;
Generation of the second file including the second display data in the bitmap format that matches the attribute of the display unit from the first display data is performed in the first file management unit,
The second file is transferred to the image display terminal device together with the first file and stored in the second storage unit,
Control for displaying the file information in the display unit is performed by the second file management unit,
The display system characterized in that the information of the file used for display is the second display data.   The display system according to claim 1, wherein the name of the first file is used for displaying the name of the file in the image display terminal device. The display unit has a function of acquiring first additional information written in the display unit,
The first additional information written when the second display data is displayed is stored in the second storage unit as vector format data,
When the first file is transferred to the information processing apparatus, the vector format data is also transferred,
3. The display system according to claim 1, wherein the first file management unit combines the vector format data with the first file. 4.   The display system according to claim 3, wherein the vector format data is annotated to the first display data as an independent object.   The display system according to claim 3 or 4, wherein the vector format data further includes second additional information added by an operation in the display unit.   The vector data is associated with the second display data and is stored in the second storage unit as a part of the second file. The display system according to item.   The second file according to any one of claims 3 to 6, wherein the second file has auxiliary information, and whether or not the vector format data exists can be identified by the auxiliary information. Display system.   8. The display system according to claim 1, wherein the second display data includes bitmap data having a plurality of resolutions. 9.   9. The image display terminal apparatus according to claim 1, wherein the image display terminal device has predetermined model information, and the second display data is generated based on the predetermined model information. Display system. A display unit equipped with electronic paper;
An image display processing unit for performing processing for displaying an image on the display unit;
A storage unit for storing the first file and the second file;
A file manager,
Including
The first file includes first display data;
The second file includes second display data;
The second display data is bitmap format data obtained by converting the first display data according to the attribute of the display unit,
When the operation for displaying the contents of the first file is performed, the second file is displayed on the display unit using the second display data. Terminal device. A storage unit for storing a first file including first display data;
A file management unit for generating a second file including second display data;
Including
The second display data is bitmap format data generated from the first display data,
When the operation for transferring the first file to an external device is performed, the second display data is generated,
The information processing apparatus according to claim 1, wherein the transfer of the file to the external device is performed on the first file and the second file. An information processing apparatus having a first file management unit;
An image display terminal device having a second file management unit,
The first file management unit displays a display image using the first display data included in the first file information,
The second file management unit displays the display image using the second display data included in the second file information,
The second file information includes the first display data and the second display data,
The display system, wherein the second file information is generated in the first file management unit when the first file information is transferred from the information processing apparatus to the image display terminal apparatus.   The display system according to claim 12, wherein the second display data is data in a format matched to an attribute of a display unit of the image display terminal device. The image display terminal device has a function of acquiring the first additional information written in the display unit and adding it to the second file information,
The display system according to claim 12 or 13, wherein the second file management unit displays the display image by using the second display data and the first additional information. The second file management unit includes the first display data and the first additional information when transferring the second file information from the image display terminal device to the information processing device. File information for
The first file management unit manages the third file information as new first file information, and uses the first display data and the first additional information to display the display image. The display system according to claim 14, wherein display is performed.   The display system according to claim 12, wherein each of the information processing device and the image display terminal device can be used as an independent device. The second display data is bitmap format data,
The display system according to any one of claims 12 to 16, wherein the first additional information is data in a vector format.   The display system according to claim 12, wherein the display control unit that controls the display unit and the second file management unit are configured as one semiconductor circuit device. A storage unit;
A writable display,
A file manager,
Including
The storage unit stores file information created by another device,
The file information includes first display data and second display data,
The file management unit acquires the first additional information written by the user in the display unit and adds the first additional information to the file information, and also uses the second display data and the first additional information to display the display Display an image on the
When outputting the contents of the file information to the other device, the file management unit outputs the first display data and the first additional information.

Images